define(function(){
	/*cookie操作*/
	return {
		/*添加*/
		set:function(name,value,time){
			var exp = new Date(); 
			exp.setTime(exp.getTime() + time*24*60*60*1000); 
			document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString(); 
		},
		/*获取*/
		get:function(name){
			var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
			if(arr=document.cookie.match(reg)){
				return unescape(arr[2]); 
			}else{ 
				return null;
			};
		},
		/*删除*/
		del:function(name){
			var exp = new Date(); 
			exp.setTime(exp.getTime() - 1); 
			var cval=this.get(name); 
			if(cval!=null){
					document.cookie= name + "="+cval+";expires="+exp.toGMTString(); 
			};
		},
		/*是否开启*/
		isOpen:function(){
			return navigator.cookieEnabled;
		}
	};

});